Linux Audio
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Embedded Linux Audio
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/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2007 Aurelien Jarno <aurelien@aurel32.net> */ #include <linux/export.h> #include <linux/ssb/ssb.h> #include <linux/ssb/ssb_driver_chipcommon.h> #include <linux/ssb/ssb_driver_extif.h> #include <asm/mach-bcm47xx/bcm47xx.h> #include <asm/mach-bcm47xx/gpio.h> #if (BCM47XX_CHIPCO_GPIO_LINES > BCM47XX_EXTIF_GPIO_LINES) static DECLARE_BITMAP(gpio_in_use, BCM47XX_CHIPCO_GPIO_LINES); #else static DECLARE_BITMAP(gpio_in_use, BCM47XX_EXTIF_GPIO_LINES); #endif int gpio_request(unsigned gpio, const char *tag) { switch (bcm47xx_bus_type) { #ifdef CONFIG_BCM47XX_SSB case BCM47XX_BUS_TYPE_SSB: if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) && ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES)) return -EINVAL; if (ssb_extif_available(&bcm47xx_bus.ssb.extif) && ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES)) return -EINVAL; if (test_and_set_bit(gpio, gpio_in_use)) return -EBUSY; return 0; #endif #ifdef CONFIG_BCM47XX_BCMA case BCM47XX_BUS_TYPE_BCMA: if (gpio >= BCM47XX_CHIPCO_GPIO_LINES) return -EINVAL; if (test_and_set_bit(gpio, gpio_in_use)) return -EBUSY; return 0; #endif } return -EINVAL; } EXPORT_SYMBOL(gpio_request); void gpio_free(unsigned gpio) { switch (bcm47xx_bus_type) { #ifdef CONFIG_BCM47XX_SSB case BCM47XX_BUS_TYPE_SSB: if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco) && ((unsigned)gpio >= BCM47XX_CHIPCO_GPIO_LINES)) return; if (ssb_extif_available(&bcm47xx_bus.ssb.extif) && ((unsigned)gpio >= BCM47XX_EXTIF_GPIO_LINES)) return; clear_bit(gpio, gpio_in_use); return; #endif #ifdef CONFIG_BCM47XX_BCMA case BCM47XX_BUS_TYPE_BCMA: if (gpio >= BCM47XX_CHIPCO_GPIO_LINES) return; clear_bit(gpio, gpio_in_use); return; #endif } } EXPORT_SYMBOL(gpio_free); int gpio_to_irq(unsigned gpio) { switch (bcm47xx_bus_type) { #ifdef CONFIG_BCM47XX_SSB case BCM47XX_BUS_TYPE_SSB: if (ssb_chipco_available(&bcm47xx_bus.ssb.chipco)) return ssb_mips_irq(bcm47xx_bus.ssb.chipco.dev) + 2; else if (ssb_extif_available(&bcm47xx_bus.ssb.extif)) return ssb_mips_irq(bcm47xx_bus.ssb.extif.dev) + 2; else return -EINVAL; #endif #ifdef CONFIG_BCM47XX_BCMA case BCM47XX_BUS_TYPE_BCMA: return bcma_core_mips_irq(bcm47xx_bus.bcma.bus.drv_cc.core) + 2; #endif } return -EINVAL; } EXPORT_SYMBOL_GPL(gpio_to_irq);